Liquid-treating apparatus.



K. W. BARTLETT. LIQUID TREATING APPARATUS.

APPLICATION FILED OUT. 23, 1911.

Patented Sept. 9. 1913 "Q D .73 Arts. rerun Kuhn w. iaenrtmn; or CHICAGO, ILLINOIS.

muons LIQUID-remains"erranarus.

To all tvhom 1'2- may concern Be it known that I, KENT W. BARTLETT,"

a citizen of :the United States, residin at Chicago; in the county of Cook and"; tate of Illinois, have invented a certain new and useful Improvement in Liquid-Treating Apparatus, of which the following is e, full, clear concise,. and exact description, reference being had to the accompanying drawings, forming a part of this specification.

My invention relates to-liquid treating apparatus and, in its preferred embodiment,

embraces certain-of, the characteristics of :the'apparatus disclosed-in my co'pending applications Serial No.1556,51.4,.filed June- 13, 1910, and Serial No; 568,984e, filed June 27, 1910,:th0ugh there are characteristics of my present invention which are not to be limited to association with the aforesaid characteristics. v

My invention as preferably embodied in- 'cludes a source of liquid supply, a receptacle into which liquid to be treated is furnishedfrom said source of liquid supply, a chemical tank from which liquid chemical may be passed into said receptacle and from which chemical tank chemical may be discharged in progressively increasing quan- "tity, and means, governed by the liquid, for

causin the passage of liquid into the chemical tank in progressively increasing quantity relative to the quantity of liquid passed from said source of liquid supply into said receptacle whereby the quantity of liquid chemical passing; from the chemical tank increases progresslvely w1th' respect to the quantity of liquid passing into said receptacle, to compensate for reduction in the strength of the liquid chemical.

\Vhile my invention is preferably embodied in'an"apparatus in which the liquid chemical is fed to the :liquid' to be treated in progressively increasing quantity, it will be apparent from the description which is to follow that my invention-is of importance whether the liquid chemical is to he admitted to the liquid to be treated in progres sivcly increasing quantity or not.

In th v apparatus of my aforesaid copcnding' application Serial No. 566,514,, filed June 13, 1910, the liquid was transferred directly from the chemical tank to the receptacle or settling tank but-'inmy pilbsent lspccificati enjo f Letters Pm ent, pat itedsephfi, 1913. 1 Application fi1ed 0ctober23,-1911. Sefia1No.656 ,-109.

invention, as it is preferably e'mbodiedthe chemical when discharged from the chemicaltank is intermixed withprogressively decreasing quantity of treated liquid so that the-quantity of chemical containing liquid admitted to the settling tank [remains substantially constant with respect to the uantity of liquid admitted to the sett mg tank. y means of this feature 'of 'my invention I am enabled tov employ a constant capacity pump, i a cent trifuga l pump, for discharging chemical carrying liquid to the settlin tank in anoutfit where the chemical taut-is disposed below theplace where the chemical is to be discharged'into the settling tank or. other element containing the liquid undergoing treatment. The feature of my invention now being described is also of service irrespective of the uniform flow of chemical carrying liquid into the settling tank as it enables me governed by liquid which is permitted to flow'within a receptacle, the liquid ultimately rising in such receptacle to a level at or beyond which the liquid will have no further governing action upon said1nechanism, it thereupon being necessary sutticently to emptythe receptacle to permit the liquid to resume or continue its control over mechanism. Hitherto it has been the practice to employ an outlet. leading directly from the "receptacle and through which liquid was permitted to pass when the outlet was opened by a controlling valve. It frequently happened that the valve would not be closed after the receptacle was sufficiently emptied of its-liquid contents and it onc'object of the present feature of my invention to provide means whereby the reception of liquid within the receptacle is- -assured after the receptacle is emptiedfso I will explain my invention more fully by reference to the accompanying drawing showing the preferred embodiment thereof when comprised within awater softemng outfit, though I do not wish to limit my invention to apparatus'that is employed for to those skilled in the art.

softening water.

Fi ure 1 of the drawingshows the preferre form of my invention in elevation, certain parts bein broken away and shown in section more cliearl'y to reveal characteristics of the invention, and Fig. 2 is a de tail sectional view of the preferred form of valve mechanism entering into the construction.

Like parts are indicated by similar charactors of reference in both figures.

The water that is to be treated is passed from a suitable source of supply, such as a pipe 1, into a receiving box 2 containing a stilling plate 3 for preventing the water from surging within the box. An outlet 4 projects through the bottom of the box 2 and serves to convey the bulk of the water passing from the pipe 1 to the interior of the settling tank 5. It is understood that the settling tank is provided with an outlet, not shown, whereby the treated water may be conveyed from the tank to perform its service. It is not necessary to show themechanism by which water is admitted to the pipe 1 to replace water removed from the settling tank as such is so well known A portion of the water passes through a small pipe6 into a receptacle 7 that incloses a float 8 carried vupon an end of the lever 9 that is pivotally mounted between its ends. The end of the leverl) opposite to that which carries the float 8 is connected with a chain 10 that passes over pulleys 11 and carries a tapered valve 11 which operates in accordance with the structure disclosed in my aforesaid copending application Serial No. 568,984, filed June 27, 1910. By means of the float and the valve the opening through which water. may pass from the box 2 into a pipe 12 progressively increased as the water cong tinues to flow into said box and the recep 'tacle.7. The water from the pipe 12 finds passage into a chemical tank 13 where it is thoroughly intermixed with the liquid chemical present'in said tank 13, this water diluting the chemical but at the same time causing the diluted chemical to flow out of the tank 13 in progressively increasing quantity with respect to the quantity of water passing into the settling tank 5 to compensate for reduction in thestrength of the liquid chemical. The liquld chemical that is discharged in progressively increasink quantity, flows from theohemical tank 13 through a discharge pi e 14, this discharge pi e conveying the c emical to a diluting tan 15 where the chemical is further diluted in order to reduce its deleterious effect upon the pump which is employed to elevate the chemical and discharge 1t into the settling tank, when the chemicaltank is located below the point of discharge into the settling tank. Broadly speaking, water from any suitable source may be employed for further diluting the chemical, though I prefer to take the water from the settlin tank as this water has been treated in sue a manner as to prevent a sludge forming reaction of the chemical upon the diluting water. After the chemical has ben further diluted it is elevated by means of a pump 16 through a pipe 17 that terminates at its upper end above the water in the settling tank. The pum 16, in the embodiment of the invention il ust-rated, is a centrifugal pump that is driven by a motor 18. The pump 16 is. desirably a centrifugal pump, and in order that such a pump'may be em- .ployed the volume of diluted chemical flowing through the pipe 17 is maintained constant to which end the quantity of diluting water admitted tothe tank 15 isprogressively decreased tothe same extent that the 'quantity of chemical flowing through the pipe 14 is progressively increased whereby the volume of liquid to be pumped is maintained uniform, this result being of advantage whether the chemical and the diluting water are thoroughly intermixed or not, an important function of the additional water then being to maintain the volume of pumped liquid uniform. Where chemically treated water is to be employed for further diluting the chemical I desirably supply the same through a pipe 19 into whose upper end the chemically treated water is admitted from the settling tank and through whose lower end the diluting water is discharged into the tank 15. is maintained at a substantially fixed level and is replenished as .itis withdrawmfrom The water in the tank 15 said tank as a consequence of the opening of a valve 20 in the pipe 19 that occurs each time the valve controlling float 21 connected with the valve 20 sinks upon withdrawal of the water from the tank 15.

When the operation of the apparatus is initiated the flow of chemical] throughthe pipe 14 is at its minimum and the flow of diluting water through the pipe 19 is at its maximum. As the flow of chemical through the pipe 1 4 increases the flow of diluting water through the pipe 19 decreases correspondingly, the result being that the liquid load for the centrifugal pump 16 is made uniform, thus enabling the employment of such a pump. It is of course understood that the settling tank outlet is located above the filter chamber, in accordance with well known'practice, whereby it is impossible for the level of the water in the settling tank to be lower than the upper end of the pipe 19,

the size of theoutlet pipe and itsflange. connection with thesettling tank being such as to causethe location of this pipe to be above the top of the pipe 19. It-is the practice to cause the water to flow. into the pipe I as soon as it flows out of thesettling tank so that the level in the settling tank would always be above the top of the pipe 19 irrespective of the location of the outlet I pipe.

The stilling-plate 22, within the tank .15, is disposed between the discharge ends of the pipes 14 and 19, the pump being in direct com nunication with theportion of the tank 15 into which the chemical is directly discharged so that the passage of the required amount of chemical to the settling tank 5 through the pipe 17 is assured.

When the maximum flow of chemical throughthe pipe 14 has occurred the level of the water in the. receptacle 7 isat its maximum height as indicated by the dotted line, this level being below the bight at the upper part of the siphon pipe 23; Then the level in the receptacle 7 reaches this point an attendant, by observation or some other way, becomes aware of the fact and turns the valve handle 24 of a three way valve a quarter turn to the left from the posit-ion shown so that water may flow from 'the settling tank through the pipe 25 and upward y into the longer leg of the pipe 23 so that a column of water 1s established in this long leg that overbalanccs the column [of water in the short leg of the siphon whereupon the operator restores the handle 24 to the positionshown so that an outlet is established from the siphon pipe by way of wthe discharge branch pipe 26, the pipe 25 then having its communication with the pipe 23 cut off. \Vhen the level in the receptacle.

1 7 has been. brought in line with the lower endof the short leg of the siphon pipe, flow of water through the outlet 26 from the receptacle 7 ceases, the air entering the siphon "pipe 23 at the short leg thereofbreaking siphonic action so that the longer leg of the sipho'n pipe is emptied. The water, in the next cycle of operation, will rise in the receptacle 7 to its 'upperlimit whereupon the receptacle 7 will again be emptied, all in a anner which hasv been described. It will be observed that the ressure of the water in the tank 5 is emp oyed to establish the column of water in the longer leg of the i siphon 23 that is necessary to start the siphon I? mtlopera'tion in order to empty the receptacle 7 and while the pressure of the water is imployed to initiate the siphonic action, I do not wish to be limited to the means through which the water in the settling tank operates to effect discharge of water from therecepi .70

.tacle 7.

From the foregomg description of my 1nvention it will be apparent that that feature of my invention which is of service in reducing deleterious action of the chemical upon the pump is of service whether liquid chemical is passed from the chemical tank 1n progressively increasing quantity or. not. a

It will, also be apparent that my invention is of service in the dilution of liquid chemical that is passed from the chemical tank in r varying quantities, w'hethei' such variation is one in which the discharge otchemical is in progressively increasing quantity or not.

The drawing illustrates an outlet 4' which serves to convey thewater to be treated directly to the settling tank so that the raw water does not pass through. the pump. 16. It is old to employ a pump that' efi'ects the passage of water to be treated to the settling tank, to which water chemical is admitted before it reaches the pump, The

pump thus forces partially treated water into the settling tank, the water in this condition' containing sludgethat interferes with the proper action of the pump. I therefore V do not limit myself to an outfit inwhich the chemical is discharged from y the chemical tank in progressively increasing quantity nor to the pumping of a uniform quantity of liquid that contains the discharged chemical Patent the following invention herein specifically set forth,

1. A liquid treating apparatus including a. tank for receiving liquid furnished for treatment; a chemical tank; means for proportioning chemical to the liquid to be treated thereby; a pump for forcing chemical, discharged from the chemical tank and after it has been proportioned to the liquid to be treated thereby, to the liquid receiving tank; I

- means for supplying a portion of the liquid, after its treatment by the chemical, tothe proportionedchemical being admitted to the pump; and means for discharging the liquid that is to be treated into the tank for receiving the same independently of the pump.

2, A. liquidtreating apparatus including a tank for receiving the. liquid furnished for 7 treatment; a chemical tank from which chemical may be discharged in changing quantity; a pump for forcing chemical discharged from the chemical tank to the liquid receiving tank; and means for supplying additional liquid to the chemical being admitted to the pump from the chemical tank, said means includmg mechanism for altering the quantity of added liquid to render 'the aggregate quantity of chemical and portion of the liquid that has been treated to the chemical being admitted to the pump from the chemical tank, said means including mechanism for altering the quantity of added liquid to render the aggregate quantity of chemical and added liquid Whose passage is forced by the pump substantially constant.

4. A liquid treating apparatus including a tank for receiving the liquid furnished for treatment; a chemical tank from which chemical may ,be discharged in changing quantity; a pump for forcing chemical discharged from the chemical tank to the liquid receiving tank; and means for supplying additional liquid to the chemical being admitted to the pump from the chemical tank, said means including mechanism governed by the aggregate volume of chemical and added li uid automatically to control the amount 0 added liquid to render the volume of chemical and added liquid forced by the pump substantially constant.

5. A liquid treating apparatus includin a tank for receiving the liquid furnished or treatment; a chemical tank from which chemical may be discharged in changing quantity; a pump for forcing chemical discharged from the chemical tank to the liquid receiving tank; and means for supplying a portion of theliquid that has been treated to the chemical being admitted to the pump from the chemical tank, said means including mechanism governed by the aggregate volume of chemical and added liquid automatically to control the amount of added liquid to render the volume of chemical and added liquid forced by the pump substantially constant.

6. A liquid treating apparatus including a chemical tank from which chemical. may be discharged into liquid to be treated; mechanism for governingthe'fiow of chemical from-said chemical tank to said liquid; a receptacle in which'liquid is received in proportion to that which is supplied for treatment; mechanism for governing the operatio'nof the aforesaid mechanism and "in turn operated by the liquid as it rises in'the receptacle; and means for discharging liquid from said receptacle, said means being automatically governed by the liquid in the receptacle to cut ofl the fiovi of liquid from the receptacle when liquid Within the receptacle has reached a lower limiting level.

7. A liquid treating apparatus including a chemical tank from which chemical may be discharged into liquid to be treated;

mechanism for governing the flow of chemical from said chemical tank to said liquid; a receptacle in which liquid is received in proportion to that which is supplied for treatment; mechanism for governing the operation of the aforesaid mechanism and in turn operated by the liquid as it rises in the receptacle; and a siphon having one leg receiving liquid from the receptacle and the other leg communicating with the exterior of the receptacle to permit of the discharge of liquid from said receptacle.

8. A liquid treating apparatus including a chemical tank from which chemical may be discharged into liquid to be treated; mechanism for governing the flow of chemical from said chemical tank to said liquid; a receptacle in which liquid is received in propor tion to that which is supplied for treatment; mechanism for governing the operation of the aforesaid mechanism and in turn operated by the liquid in the receptacle; a siphon having one leg receiving liquid from the receptacle and the other'leg communicating with the exterior of the receptacle to permit of the discharge of liquid from said receptacle; and means, other than said receptacle, for supplying liquid to the latter siphon leg to start the siphon in action. 9. A liquid treating apparatus including a chemical tank from which chemical may be discharged into liquid to be treated; mechanism for governing the flow of chemical from said chemical tank to said liquid; a receptacle in which liquid is received in proportion to that which is supplied for treatment; mechanism for governing the operation of the aforesaid mechanism and in turn operated by the liquid in the receptacle; a siphon having one leg receiving liquid from the receptacle and the other leg communicating with the exterior of the receptacle to permit of the discharge of liquid from said receptacle; means, other than said valving mechanism for controlling the con nection of the latter siphon leg with: the, A

extra liquid supply.

10. A liquid treating apparatus including a tank for receiving liquid furnished for treatment; a chemical tank; means for pro-' portioning chemical to the liquid to he ;treated"thereby=; ;a pump for forcing chemi i cal, discharged from the chemical tank and In witness whereof, I hereunto subscribe after it has been proportioned to the liquid my name this twentieth day of October, to be treated thereby, to the' liquid receiving A. D. 1911. I

" KENT W. BARTLETT.

tank and means forsupplying a portion of the liquid, after its treatment by the chemi- \Vitnesses:

cal; to the proportioned chemicalbeing ad- E. L. WHITE, mitted to the pump. G. L. CRAGG. 

